The pins on the map represent different curb alerts. Here's the breakdown:

Green pins are less than 24 hours oldRed pins are over a day old

Click a pin to view more details about the curb alert as well as a photo if it has been provided. You can report curb alerts as 'No Longer Available' or 'Spam' to keep Curb Surf up to date and free of unwanted posts.

If you have location services enabled, you can also post your own curb alert right from the app. A title is all that's required, but feel free to add a description and photo to get your post noticed. When your item is taken, you can go back to your post and report it to remove it from the listings.